edu.indiana.lib.twinpeaks.util

Class ByteUtils

java.lang.Object

edu.indiana.lib.twinpeaks.util.ByteUtils

public class ByteUtils
extends Object

Byte utilities

Method Summary

Modifier and Type	Method and Description
static boolean	equals(byte[] source, byte[] match) Does the source array equal the match array?
static void	getBytes(byte[] source, int srcBegin, int srcEnd, byte[] destination, int dstBegin) Copies bytes from the source byte array to the destination array
static int	indexOf(byte[] source, byte[] match) Returns the index in the source array where the first occurrence of the specified byte pattern is found
static int	indexOf(byte[] source, String matchString) Returns the index in the source array where the first occurrence of the specified text (a String, converted to a byte array) is found
static int	lastIndexOf(byte[] source, byte[] match) Returns the index in the source array where the last occurrence of the specified byte pattern is found
static int	lastIndexOf(byte[] source, String matchString) Returns the index in the source array where the last occurrence of the specified text (a String, converted to a byte array) is found
static void	main(String[] args)
static boolean	startsWith(byte[] source, byte[] match) Does this byte array begin with match array content?
static boolean	startsWith(byte[] source, int offset, byte[] match) Does this byte array begin with match array content?
static byte[]	subbytes(byte[] source, int srcBegin) Return a new byte array containing a sub-portion of the source array
static byte[]	subbytes(byte[] source, int srcBegin, int srcEnd) Return a new byte array containing a sub-portion of the source array

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

indexOf

public static int indexOf(byte[] source,
                          String matchString)

Returns the index in the source array where the first occurrence of the specified text (a String, converted to a byte array) is found

Parameters:

source - Byte array to examine

matchString - String to locate in source

Returns:

Index of the first matching character (-1 if no match)

indexOf

public static int indexOf(byte[] source,
                          byte[] match)

Returns the index in the source array where the first occurrence of the specified byte pattern is found

Parameters:

source - Byte array to examine

match - Byte array to locate in source

Returns:

Index of the first matching character (-1 if no match)

lastIndexOf

public static int lastIndexOf(byte[] source,
                              String matchString)

Returns the index in the source array where the last occurrence of the specified text (a String, converted to a byte array) is found

Parameters:

source - Byte array to examine

matchString - String to locate in source

Returns:

Index of the first matching character (-1 if no match)

lastIndexOf

public static int lastIndexOf(byte[] source,
                              byte[] match)

Returns the index in the source array where the last occurrence of the specified byte pattern is found

Parameters:

source - Byte array to examine

match - Byte array to locate in source

Returns:

Index of the last matching character (-1 if no match)

startsWith

public static boolean startsWith(byte[] source,
                                 byte[] match)

Does this byte array begin with match array content?

Parameters:

source - Byte array to examine

match - Byte array to locate in source

Returns:

true If the starting bytes are equal

startsWith

public static boolean startsWith(byte[] source,
                                 int offset,
                                 byte[] match)

Does this byte array begin with match array content?

Parameters:

source - Byte array to examine

offset - An offset into the source array

match - Byte array to locate in source

Returns:

true If the starting bytes are equal

equals

public static boolean equals(byte[] source,
                             byte[] match)

Does the source array equal the match array?

Parameters:

source - Byte array to examine

offset - An offset into the source array

match - Byte array to locate in source

Returns:

true If the two arrays are equal

getBytes

public static void getBytes(byte[] source,
                            int srcBegin,
                            int srcEnd,
                            byte[] destination,
                            int dstBegin)

Copies bytes from the source byte array to the destination array

Parameters:

source - The source array

srcBegin - Index of the first source byte to copy

srcEnd - Index after the last source byte to copy

destination - The destination array

dstBegin - The starting offset in the destination array

subbytes

public static byte[] subbytes(byte[] source,
                              int srcBegin,
                              int srcEnd)

Return a new byte array containing a sub-portion of the source array

Parameters:

srcBegin - The beginning index (inclusive)

srcEnd - The ending index (exclusive)

Returns:

The new, populated byte array

subbytes

public static byte[] subbytes(byte[] source,
                              int srcBegin)

Return a new byte array containing a sub-portion of the source array

Parameters:

srcBegin - The beginning index (inclusive)

Returns:

The new, populated byte array

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception